WO2003068601A1 - Machine pour la fermeture par thermoscellage de contenants divers - Google Patents
Machine pour la fermeture par thermoscellage de contenants divers Download PDFInfo
- Publication number
- WO2003068601A1 WO2003068601A1 PCT/FR2003/000424 FR0300424W WO03068601A1 WO 2003068601 A1 WO2003068601 A1 WO 2003068601A1 FR 0300424 W FR0300424 W FR 0300424W WO 03068601 A1 WO03068601 A1 WO 03068601A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base
- chassis
- coil
- magnetic field
- closing
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
- B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
- B65B51/148—Hand-operated members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B7/00—Closing containers or receptacles after filling
- B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
- B65B7/162—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by feeding web material to securing means
- B65B7/164—Securing by heat-sealing
Definitions
- the object of the present invention relates to the technical field of packaging of various products and, more particularly, food products in the context of general public, artisanal or semi-industrial manufacturing.
- the object of the invention more specifically relates to the packaging of products using containers of the tray type, of different shapes and sizes which should be closed after filling, in order to preserve their entire contents.
- the present invention relates more precisely to a machine making it possible to close, to seal or, in general, to close a tray by heat sealing a sealing member such as a film, a cover, a cover or the like.
- a machine comprising a base arranged to delimit a housing for receiving a container.
- This machine also comprises a movable chassis connected to the base by means of a connection system making it possible to ensure the passage of the chassis between a release position of the reception housing and a waiting position for closing the container.
- a chassis is equipped with a means for fixing a closure member to the container placed in the housing.
- a fixing means can be produced by heating means.
- This machine is also provided with an additional mechanism of indirect force ensuring a displacement of the movable frame between a closing standby position and a closed position in which the heating means are pressed against the shutter member in order to '' secure it on the container. It therefore appears that the mobile chassis must be maneuvered on the one hand, over a relatively large stroke between the release and waiting positions for closure to allow easy access to the container receiving housing and on the other hand, on a limited stroke with application to the sealing member of a relatively high sealing pressure for a determined period.
- the intensity of the sealing pressure and the heating time are important parameters for the quality of the obturation, poor closure which could lead to degradation of the product packaged in the container.
- the object of the invention therefore aims to remedy the drawbacks of known prior solutions by proposing a machine designed to move the movable frame while respecting the sealing parameters while making it possible to produce a simple machine using a minimum of parts and optimizing the energy efficiency between the installed power and the sealing pressure obtained.
- Another object of the invention is to propose a reliable machine, easy to maintain, at low cost and with limited space.
- the object of the invention therefore aims to satisfy these needs by proposing a machine for closing various containers, comprising:
- a base arranged to delimit a housing for receiving a container, - a movable frame between a release position and a closing standby position, equipped with a means of fixing a closure member to a container placed in the accommodation,
- connection system between the chassis and the base allowing the mobile chassis to pass from one position to another, - and a mechanism for moving the mobile chassis between the standby closing position and a closed position in which the fixing means secures the closure member to the container.
- the mobile chassis is mounted on the base with a possibility of vertical sliding to allow it to move between its closing standby position and its closed position, • the movement mechanism comprises at least one coil for producing a magnetic field, mounted on the base or the chassis so that in the standby position for closing the chassis, the magnetic field created by the coil acts on a circuit closing the magnetic field arranged respectively on the chassis or the base, on the periphery of the reception housing,
- the frame and the base are arranged to include means for positioning the frame, in the standby closing position, so as to determine with the base an air gap adapted to allow, during the excitation of the coil, the closing of the magnetic field by the circuit in order to create a force of attraction ensuring the movement of the chassis to the closed position of the container.
- Another object of the invention is to propose a machine for closing by heat-sealing containers, also designed to create an air depression and possibly inject a neutral gas.
- the machine according to the invention comprises a chassis and / or a base provided with sealing means making the receiving housing delimited by a tank leaktight in closed standby position, such a communicating receiving housing with a device for suction and / or injection of a various fluid.
- Figure 1 is a longitudinal sectional elevation view of an embodiment of a machine according to the invention.
- FIG. 2 is a cross-sectional view taken essentially along lines II - II of FIG. 1.
- FIG. 3 is a top view of the machine taken substantially along the lines III - III of FIG. 2.
- Figure 4 is a perspective view showing a machine according to the invention equipped with a reel of heat-sealable film.
- Figure 5 is a partial sectional view showing a characteristic detail of the machine illustrated in fig.4.
- Figure 6 is a plan view showing another embodiment of the movement mechanism.
- FIG. 7 is a partial section taken substantially along the lines A-A of FIG. 6.
- Figure 8 is a longitudinal sectional view of another embodiment of a machine according to the invention.
- FIG. 9 is a cross-sectional view taken essentially along lines B-B of FIG. 8.
- FIG. 10 is a view of a characteristic detail of the machine illustrated in FIGS. 8 and 9.
- the machine according to the invention and designated as a whole by the reference 1 comprises a base 2 defining a housing 3 for receiving a container 4 intended to be closed by a shutter member not shown, by a heat sealing operation.
- the container 4 is in the form of a tray of substantially parallelepipedal shape provided with a wing or a peripheral surface 5 for sealing the closure member such as a film, a cover or a cover for example.
- the housing 3 arranged on the base 2 is delimited in a cradle 6 on the edge of which rests the peripheral surface 5 of the container.
- the peripheral cradle 6 is supported on either side by legs 8 connected at their ends to form a base 9 equipped with feet 10 for bearing on a support.
- the cradle 6 thus extends to a determined height of the support to allow positioning inside the housing 3 of containers 4 of various heights.
- the base 9 constitutes a stacking surface of the closure members to be heat-sealed on the containers 4.
- the machine 1 also comprises a mobile chassis 12 equipped with a fixing means 13 for the closure members of the container.
- the fixing means 13 is designed for heat sealing a thermoplastic sealing member on the container 4.
- the fixing means 13 is formed by a pressure plate 14 equipped with an element heating 15 such as for example, an electrical resistance.
- This pressure plate 14 has a closed outline of dimensions adapted to the peripheral area 5 of the container 4.
- the heating element 15 is connected to a regulation block, not shown, which is connected to a temperature sensor mounted in connection with the pressure plate 14.
- FIGS. 4 and 5 illustrate more particularly a machine 1 ensuring the sealing as a shutter member, of a film F wound in the form of a reel mounted on a pin 16 supported at its ends by the legs 8 of the base 2
- the base 2 is provided on its rear part with a roller 16 ⁇ passing for the film F intended to hold the film against the cradle 6 of the base.
- the machine 1 is equipped with a system 17 for cutting the film F to the length of the container 4.
- the cutting system 17 is mounted on the movable frame 12 upstream of the housing 3 with respect to the stretching direction of the film.
- the cutting system 17 comprises a knife 17 ⁇ mounted transversely on the movable frame 12, and on either side of which extends a film clamp 17 2 mounted vertically movable.
- the film clamp 17 2 is urged to extend projecting from the movable frame 12 by means of springs 17 3 to press the film against the cradle, on either side of a groove 17 for clearing the knife 17 ⁇ , fitted on the base 2.
- the chassis 12 is movable relative to the base 2 between a position for releasing the housing 3 shown in phantom in Figure 1 and a closed standby position shown in solid lines in Figure 1.
- the chassis 12 and the base 2 are connected to each other by means of a connection system 18 authorizing the passage of the mobile chassis 12 from one position to another.
- the connection system 18 consists of two rods 19 fixedly mounted on either side of the movable frame 12. The other end of each of the rods 19 is equipped with a hinge pin 21 authorizing the pivoting of the movable frame 12 around this articulation axis 21.
- each articulation axis 21 is mounted with a possibility of vertical movement allowing the approximation between the chassis 12 and the base 2 in a substantially vertical direction.
- the hinge pin 21 is mounted inside a slide 23 guided in vertical movement inside a groove 24 arranged in a tab 26 extending at the rear and towards the bottom from the cradle 6.
- Each slide 23 is resiliently returned by means of a spring 27, in the high position, that is to say in separation of the movable frame 12 relative to the base 2.
- the movable frame 12 is therefore able to occupy the release position in which it occupies a position substantially perpendicular to the extension plane of the housing 3 for receiving the container 4.
- This release position is defined by opening stops 29 carried by the tabs 26 on which bear the rods 19.
- opening stops 29 carried by the tabs 26 on which bear the rods 19.
- the mobile chassis 12 can be moved manually by pivoting around its hinge pins 21 so as to bring it to occupy a closed waiting position in which the mobile chassis 12 determines with the base 2, an air gap E.
- this closing standby position the movable frame 12 and the base 2 are found in superimposed position. More specifically, the fixing means 13 and the cradle 6 extend in planes substantially parallel to each other and distant from the air gap E, the function of which will appear more precisely in the following description.
- the waiting position for closing the movable frame 12 is defined by a closing stop 31 carried by the cradle 6 and on which abuts a connecting cross member 32 carried by the rods 19.
- the machine 1 comprises a mechanism 40 ensuring the displacement of the movable frame 12 between the closing standby position and a closing position in which the fixing means 13 ensures the joining of the closure member on container 4.
- the displacement mechanism 40 comprises at least one coil 41 for producing a magnetic field, mounted in the example illustrated on the base 2 so that in the standby position for closing the movable frame 12, the magnetic field created by the coil can be closed on a closing circuit 43 arranged in the example illustrated on the movable chassis 12.
- the field production coil 41 is associated with a magnetic circuit 44 called magnetic field channeling. In the standby closing position, the magnetic pipe circuit 44 extends in proximity relation and opposite the closing circuit 43.
- the total magnetic circuit for the circulation of the magnetic field created by the coil 41 has a fixed part (pipe circuit 44 in the example illustrated) and a movable part (closing circuit 43 in the example illustrated).
- the coil 41, the channeling circuit 44 and the closing circuit 43 of the magnetic field are adapted so that when the coil is excited, the magnetic field created by the coil can close in order to create a direct force of attraction ensuring the movement of the movable frame 12 from its standby closing position to its closing position of the container.
- this movement in translation of the movable frame 12 in a direction perpendicular to the extension plane of the housing 3 is possible insofar as the movable frame 12 is mounted with the possibility of vertical sliding by means of the articulation axes. 21 guided in vertical translation.
- the air gap E delimited between the mobile chassis 12 and the base 2 is adapted to allow, for a given excitation of the coil, the closing of the magnetic field by the closing circuit 43 placed on the mobile chassis 12.
- the magnetic field production coil 41 extends over the entire periphery of the housing 3.
- the closing circuit 43 extends around the periphery of the housing 3 when the movable chassis 12 occupies its standby position closing.
- the cradle 6 is provided with a groove 45 extending along a closed contour surrounding the housing 3, and designed to receive the excitation coil 41 and the magnetic pipe circuit 44.
- the pipe circuit 44 which is produced in a non-magnetic material, for example mild steel, has a cross section in "U" whose branches are turned towards the closing circuit 43 made of non-magnetic material.
- this pipe circuit 44 which has a toroid shape, that is to say closed on itself, is wound an electrically insulated conductive wire to form the coil 41 which is housed inside the pipe circuit 44.
- the electrical installation of the coil 41 can be completed or ensured by a coating such as silicone filling the "U" circuit.
- each excitation coil 41 and its associated magnetic circuit 43, 44 has a similar embodiment but with reduced dimensions.
- each magnetic pipe circuit 44 which is constituted in the form of a toroid of cross section in a "U" shape allows the winding of a wire to obtain the coil 41 for producing the magnetic field.
- the mobile chassis 12 is equipped with a closing circuit 43.
- a container 4 can be placed inside the housing 3 and be filled with products, for example food.
- a shutter member such as a cover, film or cover is placed on the container 4.
- the movable frame 12 is then moved manually so as to pivot and come to occupy its closed standby position determined by the support of the movable chassis 12 on the stop 31. In this standby position, the movable frame 12 extends substantially parallel to the cradle 6 with a spacing corresponding to the air gap E.
- the excitation coil 41 is then electrically supplied to create a magnetic field which closes by the closing circuit 43.
- the attraction force thus created is applied to the movable frame 12, which approaches the base in a sliding movement.
- the attraction force is such that the pressure plate 14 comes to bear on the cradle 6 and more specifically, on the closure member which is superimposed on the peripheral area 5 of the container resting on the rubber cord 7. It is note that in the alternative embodiment of the machine illustrated in Figures 4 and 5, the pressing of the pressure plate 14 leads to the cutting of the film by the knife 17 ⁇ .
- the time of application of the pressure plate 14 which corresponds to the time of electrical supply to the excitation coil 41 on the one hand, and the intensity of the attraction force which depends on the value of the excitation of the coil on the other hand, are determined so as to obtain an effective heat-sealing of the closure member on the container 4.
- the movable frame 12 which returns under the action of the springs 27 in its closed standby position, can be raised to remove the filled and closed container in order to allow another operating cycle to be restarted.
- the machine 1 according to the invention which is of simple design and of limited size requires a low electrical power insofar as the attraction force acts directly, without additional mechanical system, on the mobile chassis, on the periphery of the housing 3 .
- FIGS. 8 and 9 illustrate another alternative embodiment of a machine according to the invention adapted to create a vacuum inside the container 4 and, optionally ensuring the injection of a neutral gas inside the container.
- This machine designated by the reference 1 includes all the characteristics already described in relation to Figures 1 to 3 which are not repeated in the following description.
- this machine 1 also includes a sealed tank 50 arranged on the base 2 and adapted to delimit the reception housing 3.
- the base 2 is provided with sealing means 51 adapted to seal in a closed waiting position, the receiving housing 3.
- These sealing means 51 are constituted by a peripheral seal 52 extending outside the receiving edge of the peripheral area 5 of the container 4.
- the movable frame 12 also has a sealed character, at least for its part delimited inside the seal 52 in order to obtain a sealed receiving housing 3 .
- the machine 1 also comprises, as illustrated in FIG. 10, support stops 53 which are elastically deformable under the action of bringing the mobile chassis 12 closer to the base 2, thus making it possible to define an intermediate position for waiting for closing of the chassis 12 in which the housing 3 is made completely sealed.
- the support stops 53 for example, four in number distributed around the periphery of the housing 3 and carried by the movable frame 12, are constituted by a sheath 54 movable inside from which a spring 55 is mounted.
- the excitation of the coil 41 for creating a magnetic field is controlled by a control unit making it possible to control the coil according to a so-called weak excitation mode to ensure the limited displacement of the mobile chassis. 12 to bring it into an intermediate position for awaiting closure so as to make it watertight by the sealing means 51, the tank 50 delimiting the receiving housing 3.
- the waterproof mobile chassis 12 is brought closer to the base 2 so that the seal 52 is deformed while leaving the closure member free on the container 4.
- the suction pump can be mounted on the base by communicating with the interior from tank 50 through the interior Via a pipe fitted with a controlled shutter.
- it can be provided to inject inside the housing 3, a fluid such as a neutral gas.
- the coil for creating a magnetic field can then be controlled in its so-called normal excitation mode, to ensure the consecutive displacement of the mobile chassis 12 from so as to ensure the heat-sealing operation of the container as described above.
- the machine comprises a means 59 for detecting the movable frame 12, in its position for awaiting closure.
- This detection means 59 is connected to the control unit of the coil 41 making it possible to control its excitation when the movable frame 12 occupies its position of waiting for closing.
- this detection means 59 can equip the machine illustrated in FIGS. 1 to 3.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closing Of Containers (AREA)
- Package Closures (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Vacuum Packaging (AREA)
- Air Bags (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003226873A AU2003226873A1 (en) | 2002-02-12 | 2003-02-11 | Machine that is used to heat seal different containers |
DE60307238T DE60307238T2 (de) | 2002-02-12 | 2003-02-11 | Zur heissversiegelung verschiedener behälter verwendete maschine |
EP03739520A EP1485294B1 (fr) | 2002-02-12 | 2003-02-11 | Machine pour la fermeture par thermoscellage de contenants divers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0201678A FR2835806B1 (fr) | 2002-02-12 | 2002-02-12 | Machine pour la fermeture par thermoscellage de contenants divers |
FR02/01678 | 2002-02-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003068601A1 true WO2003068601A1 (fr) | 2003-08-21 |
Family
ID=27620104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/000424 WO2003068601A1 (fr) | 2002-02-12 | 2003-02-11 | Machine pour la fermeture par thermoscellage de contenants divers |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1485294B1 (fr) |
AT (1) | ATE334879T1 (fr) |
AU (1) | AU2003226873A1 (fr) |
DE (1) | DE60307238T2 (fr) |
ES (1) | ES2270056T3 (fr) |
FR (1) | FR2835806B1 (fr) |
WO (1) | WO2003068601A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT500725B1 (de) * | 2004-03-05 | 2007-08-15 | Kuchler Fritz | Schweisseinrichtung |
EP3584179B1 (fr) * | 2018-06-20 | 2020-07-22 | A.L.X.-Metall, Verpackungstechnik, Dipl.-Ing. Alexander Josek GmbH | Dispositif de fermeture d'un recipient au moyen d'un film de couverture |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1027587B (de) * | 1956-06-05 | 1958-04-03 | Fritz W Post | Vorrichtung zum Verschliessen von thermoplastischen Kunststoffbeuteln od. dgl. |
CH512360A (de) * | 1970-02-26 | 1971-09-15 | Heberlein & Co Ag | Vorrichtung zum Verformen von Folien, insbesondere zum Verschliessen von mit Gegenständen gefüllten Behältern mittels Kunststoff-Folien |
US4583350A (en) * | 1982-03-23 | 1986-04-22 | Aldo Artusi | Process and device in particular for sealing containers with a foil or the like material |
US4650535A (en) | 1985-08-13 | 1987-03-17 | Creative Packaging Machinery, Inc. | Apparatus for heat-sealing thermoplastic sheeting |
GB2360733A (en) | 2000-03-03 | 2001-10-03 | Stelram Engineering Ltd | Container sealing method and apparatus |
-
2002
- 2002-02-12 FR FR0201678A patent/FR2835806B1/fr not_active Expired - Fee Related
-
2003
- 2003-02-11 WO PCT/FR2003/000424 patent/WO2003068601A1/fr active IP Right Grant
- 2003-02-11 ES ES03739520T patent/ES2270056T3/es not_active Expired - Lifetime
- 2003-02-11 AT AT03739520T patent/ATE334879T1/de not_active IP Right Cessation
- 2003-02-11 EP EP03739520A patent/EP1485294B1/fr not_active Expired - Lifetime
- 2003-02-11 DE DE60307238T patent/DE60307238T2/de not_active Expired - Fee Related
- 2003-02-11 AU AU2003226873A patent/AU2003226873A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1027587B (de) * | 1956-06-05 | 1958-04-03 | Fritz W Post | Vorrichtung zum Verschliessen von thermoplastischen Kunststoffbeuteln od. dgl. |
CH512360A (de) * | 1970-02-26 | 1971-09-15 | Heberlein & Co Ag | Vorrichtung zum Verformen von Folien, insbesondere zum Verschliessen von mit Gegenständen gefüllten Behältern mittels Kunststoff-Folien |
US4583350A (en) * | 1982-03-23 | 1986-04-22 | Aldo Artusi | Process and device in particular for sealing containers with a foil or the like material |
US4650535A (en) | 1985-08-13 | 1987-03-17 | Creative Packaging Machinery, Inc. | Apparatus for heat-sealing thermoplastic sheeting |
GB2360733A (en) | 2000-03-03 | 2001-10-03 | Stelram Engineering Ltd | Container sealing method and apparatus |
Also Published As
Publication number | Publication date |
---|---|
AU2003226873A1 (en) | 2003-09-04 |
EP1485294B1 (fr) | 2006-08-02 |
FR2835806A1 (fr) | 2003-08-15 |
FR2835806B1 (fr) | 2004-11-19 |
DE60307238T2 (de) | 2007-07-26 |
ES2270056T3 (es) | 2007-04-01 |
EP1485294A1 (fr) | 2004-12-15 |
ATE334879T1 (de) | 2006-08-15 |
DE60307238D1 (de) | 2006-09-14 |
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